For all air inlet nipples with an outside thread of 16.41 mm / 3/8". This product ensures safe disconnection of the connection, eliminating the risk of unwanted disconnection and injury from hose impact. The safety coupling depressurizes the connection before decoupling. It has a working range of 0 – 20 bar and allows for one-hand operation with minimal effort during coupling and decoupling. The coupling process is quiet, avoiding loud popping sounds, and is easy to operate even while wearing gloves. Made of brass with a nickel-plated finish, it features a coupler bushing for types 1, 2, 3, and 4. The net weight is 0.13 kg, and it operates within a temperature range of -15°C to 80°C.